The Hot Zone

Climate change could signal prolonged droughts in American Southwest

Think the 1930s “Dust Bowl” was bad in the American West? Scientists have found evidence of “mega-drought” events that lasted centuries to millennia in the same region during warm, interglacial periods in the Pleistocene era (370,000-550,000 years ago). The evidence heightens concern over how the region will react to the modern day global temperature spikes. A dust storm in Oklahoma, 1936. Photo: Arthur Rothstein The American Southwest is already predicted to get pretty dry... [Read more]

Posted by Alison Hawkes on February 25, 2011 1 Comment »
Category : Climates of the Past

What a degree means

Climate change scenarios are usually summed up in terms of expected change by a certain year. Like sea levels will rise by x amount by 2020 and y amount by 2050. Or by parts per million of CO2 in the atmosphere. But because no one really knows what kind of carbon dioxide increases we’re facing (that having to do with the CO2 cutting regimen we choose), the whole forecasting effort becomes very ambiguous. That’s led some to throw their hands up on achieving greenhouse gas reductions in... [Read more]

Posted by Alison Hawkes on July 23, 2010 No Comments »
Category : The man made climate

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